\documentclass{standalone}
\usepackage{tikz}
\usepackage{ctex,siunitx}
\setCJKmainfont{Noto Serif CJK SC}
\usepackage{tkz-euclide}
\usepackage{amsmath}
\usepackage{wasysym}
\usepackage{circuitikz}
\usetikzlibrary{patterns, calc}
\usetikzlibrary {decorations.pathmorphing, decorations.pathreplacing, decorations.shapes}
\ctikzset{bipoles/length=1cm}
\begin{document}
\small
\begin{circuitikz}[>=latex, scale=0.7,european]
  % \useasboundingbox(0.9,0)rectangle(5.1,5);
  \foreach \x in {-3,-2,...,3}
     \foreach \y in {-1,0,1}
  {
     \node at (\x,\y){$\times$};
  }
  \draw (-4,-1.5)--(4,-1.5) to [R=$R_2$] (4,1.5)--(-4,1.5) to [R=$R_1$] (-4,-1.5);
  \draw [ultra thick] (.5,-1.8)node[right]{$B$}--(.5,1.8)node[right]{$A$};
\end{circuitikz}
\end{document}